[Python Environments] Environment file pop-up

Type: Feature Request

Every time a `.env` file is created/edited anywhere in the workspace, and `python.terminal.useEnvFile` is false, a pop-up comes up explaining that environment injection is disabled. It would be good if this prompt had a "Don't show again" button, as it can happen quite frequently.

Environment Information

```
Extension Version: 1.16.0
Python Extension Version: 2026.0.0

Registered Environment Managers (3):
- ms-python.python:system (Global)
- ms-python.python:venv (venv)
- ms-python.python:pipenv (Pipenv)

Total Available Environments: 4
Environment Details:
1. Python 3.14.0 (3.14.0.final.0) - /usr/local/bin/python
2. Python 3.13.5 (3.13.5.final.0) - /bin/python3
3. Python 3.13.5 (3.13.5.final.0) - /usr/bin/python3
4. my-project (3.14.0) (3.14.0.final.0) - /workspaces/my-project/.venv/bin/python

Python Projects (1):
1. /workspaces/my-project
Environment: my-project (3.14.0)

Extension Settings:
Default Environment Manager: ms-python.python:venv
Default Package Manager: ms-python.python:pip
Auto-activation is "shellStartup". Activation based on first 'py-env.terminal.autoActivationType' setting which is 'shellStartup' and 'python.terminal.activateEnvironment' if the first is undefined which is 'true'.

```

Extension version: 1.16.0
VS Code version: Code 1.108.0 (94e8ae2b28cb5cc932b86e1070569c4463565c37, 2026-01-08T13:53:10.781Z)
OS version: Windows_NT x64 10.0.26200
Modes:
Remote OS version: Linux x64 6.6.87.2-microsoft-standard-WSL2